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Title: Continuous cutter for a glass fiber chopper

Abstract: A continuous cutter ring or hoop having relatively thick, large-angle chisel teeth to bend and break attenuated glass fibers in a glass fiber chopping assembly is disclosed. The continuous cutter is an annular ring or hoop of steel or other hard material which is formed having an outer circumference provided with integral, regularly spaced, raised cutting teeth. The continuous cutter is secured on a suitable cutter wheel which cooperates with a second wheel having an elastomer cot around its circumference with the glass fibers to be severed passing between the continuous cutter and the elastomer cot. The cutter teeth are generally chisel-shaped and sever the glass fiber strand without cutting or destroying the elastomer cot. The integrally formed cutter teeth will not separate from the cutter ring and are not subject to being misaligned.


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Inventors: Gay, Benjamin A. (Huntington Beach, CA)

Application Number: 06/223563
Filing Date: 1981-01-08
Publication_date: 1983-02-15
Assignee: PPG INDUSTRIES INC

Primary Class(es): 225/97 83/663, 83/347, 83/913, 225/103
Other Classes: D01G1/04; D01G15/88; D01G1/00; D01G15/00; D01G1/04
US Patent Ref:
1152030August, 1915Blond et al.409/236
1354828October, 1920Harvey407/52Revolving tool
1511054October, 1924Duncan83/346Machine for cutting sheet material
2247529July, 1941Taylor et al.83/913Production from continuous filaments of yarns exhibiting the characteristics of staple fiber yarns
2265649December, 1941Krehbiel83/663Rotary knife
3151513October, 1964Rowlands83/346Cutting apparatus
3324753June, 1967Lindau83/672Cutter apparatus
3508461April, 1970Stream83/344CHOPPER FOR GLASS STRANDS
3644109February, 1972Klink et al.65/11APPARATUS FOR SEVERING LINEAR MATERIAL
3731575May, 1973Gelin83/344CHOPPER FOR LINEAR MATERIAL
3771981November, 1973Sears et al.65/9APPARATUS FOR SEVERING AND DEPOSITING GLASS FIBERS
3873290March, 1975Marzocchi65/2METHOD OF PRODUCING DISCONTINUOUS LENGTHS OF DISPERSED FILAMENT STRAND
3892157July, 1975Currie et al.83/346Slitting roll
3899955August, 1975Selch407/52Machine tool construction
3908232September, 1975Okayama83/913Tow converter
4163653August, 1979Symborski et al.65/2Method and apparatus for forming and collecting discrete fibers and/or strands

Other Refs:
Primary Examiner: Meister, James M.
Assistant Examiner:
Attorney: Curley, John E.
Claims:
I claim: